Transcript
Maxiva™ UAX Air-Cooled UHF Multimedia TV Transmitter The Maxiva™ UAX air-cooled UHF solid-state transmitter incorporates Harris® PowerSmart® and Apex M2X™ multimedia exciter technologies to provide today’s broadcaster unmatched performance, reliability and quality. Designed with future broadcasting needs in mind, the Maxiva UAX transmitter is a single transmitter platform capable of DVB-T/H, DVB-T2, ATSC, ATSC Mobile DTV, ISDB-Tb, CMMB, CTTB, FLO™ or other digital standards.
For pre-filter power output requirements up to 2.5 kW COFDM, 2.5kW 8VSB, and 3.75 kW analog, the Maxiva UAX transmitter is capable of serving broadcasters needs for efficient, easy to maintain transmitter systems. The UAX utilizes the Harris platform technologies such as the Apex M2X multimedia exciter, PowerSmart technology and 50v LDMOS amplifier devices. This powerful blend provides best-in-class performance with respect to transmitter RF performance, efficiency, size, and upgradeability. To learn more about PowerSmart, please click on the logo below:
FEATURES ▪ PowerSmart technology, for best-in-class power efficiency and lowest operating costs ▪ Rugged, reliable design and construction ▪ Digital and analog power levels up to 2.5 kW and 3.75 kW, respectively (before filter) ▪ Apex M2X exciter technology, allowing easy migration from analog to digital or between different standards ▪ Real-Time Adaptive Correction (RTAC™) technology is included with every system ▪ Fully broadband power amplifier (PA) modules — 470 to 862 MHz ▪ 1:1 PA module to power supply (PS) redundancy ▪ Hot-pluggable air-cooled linear RF amplifier modules and power supplies for simplified maintenance ▪ Modular central control system for straightforward monitoring and in-depth diagnostics ▪ Web-enabled remote graphical user interface (GUI) Maxiva UAX
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PRODUCT DETAILS Increased Density and Efficiency via Harris PowerSmart Technology Featuring Harris PowerSmart technology in its transmitter architecture, the Maxiva UAX line offers superior power and efficiency. New 50-volt LDMOS device technology delivers a dramatic increase in power density, lower operating costs and reduced cost of ownership over the life of the transmitter. Improved Uptime and Reduced Service Costs Redundant PA and universal power supply (PS) modules simplify on-air servicing and eliminate costly interruptions. Lightweight pallets and modules facilitate overnight/same-day shipping for simple, cost-effective spares holding. The Maxiva UAX transmitter also supports replacement of pre-tuned amplifier pallets in the field, eliminating the need for complex tuning after FET replacement. Maximized Coverage with the Apex M2X Exciter Utilizing the Harris Apex M2X multimedia exciter, the Maxiva UAX transmitter takes digital and mobile TV to the next level. Harris digital exciters have logged more hours in real-time broadcast than all others combined. The Apex M2X exciter provides a flawless signal with complete technical and regulatory compliance for tube- and solid-state digital transmitters. Apex M2X supports a wide range of global digital standards including ATSC, ATSC Mobile DTV, DVB-T/H, ISDB-TB, FLO, CTTB, CMMB and a range of analog TV standards, including NTSC and PAL. It allows for a smooth conversion to digital transmission, and this flexibility, coupled with the exclusive Real-Time Adaptive Correction (RTAC) technology incorporated in the exciter, provides superior performance. Compact Footprint Suited for crowded, shared transmitter sites, the Maxiva UAX transmitter reduces facility space requirements and simplifies installation. Powerful, Straightforward Monitoring and Control The main system control is located in the low-power unit and communicates with each amplifier bay that has independent protection and control capabilities. Each power amplifier (PA) module has dedicated control and monitoring to support on/off functionality and alarms for reflected power, temperature and current overloads. For maximum functionality, all dual drive Maxiva UAX systems include a Transmitter Control Unit (TCU). The TCU includes two parallel levels of operational support: a main microprocessor based controller and a back-up, or “life-support” controller. The main controller provides a front-panel, color touch-screen display, SNMP communications support and IP connectivity via the built-in Web GUI. Ideal for network operations, the control system can be accessed from anywhere in the world via TCP/IP over a telecom or network connection. The back-up controller provides minimal control and monitoring of the transmitter platform, using a small number of parallel signals, simple interface controls and front-panel controls and indicators.
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IMAGES/DIAGRAMS UAX-10 Digital/UAX-15AN
UAX-50/100 Digital/UAX-75/150AN
UAX-250 Digital/UAX-375AN
UAX-500 Digital/UAX-750AN
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UAX-1000 Digital/UAX-1500AN
UAX-2000 Digital/UAX-3000AN
SPECIFICATIONS Specifications and designs are subject to change without notice.
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General Frequency Range
470 to 862 MHz
Channel Bandwidth
6, 7 or 8 MHz
RF Load Impedance
50 ohms, 1.1:1 VSWR over any single TV channel
RF Output Connector
Type-N female, 7-16 DIN or 1-5/8 in. EIA connector size dependent upon power level
AC Mains AC Mains Requirement
UAX-10/15, UAX-50/75, UAV 100/150: Single-phase 110 to 127 V, 50/60 Hz, 10/-15%, or single-phase 208 to 240 V, 50/60 Hz, 10/-15% UAX-250/375, UAX-500/750, UAX-1000/1500, UAX-2000/3000: Single-phase 208 to 240 V, 50/60 Hz, 10/-15%, or three-phase 208 to 240 V, 50/60 Hz, Wye or Delta, 10/-15%, or three-phase 380 to 415 V, 50/60 Hz, Wye only, 10/-15%.
Power Factor
>0.90
Environmental Altitude
Up to 13,123 ft (4,000 m) elevation above mean sea level
Ambient Temperature Range
32º to 113º F (0º to 45º C) at sea level (upper limit derated 3.6º F (2º C) per 1000 ft (305 m) elevation AMSL)
Humidity
95%, non-condensing
Cooling Method
Air input with built-in filter at front; air exhaust with built-in DC fans at rear; ducted air exhaust and/or input available as option
Analog Analog Television Systems
CCIR G, I, K, K1, M, N
Color Systems
PAL, NTSC, SECAM
Sound Systems
Monaural, BTSC, IRT, NICAM G
Power Output (vision peak of sync)
15 W to 3 kW available (after filler)
Analog Video Performance Video Input
2 inputs 75 ohms, 0.7 to 1.4 V, 75 ohms, 34 dB return loss
Regulation of Output Power
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±3%
Variation of Output Power2
±2%
Vision Sideband Response3
PAL system G shown (other systems available)
-1.25 MHz and below
-20 dB or less
-4.43 MHz
-30 dB or less
-0.75 to -1.25 MHz
+0.5 dB or less
-0.5 to +4.5 MHz
+0.5 to -0.5 dB
+5.0 MHz
+0.5 to -2.5 dB
+5.75 MHz and above Frequency Stability Maxiva UAX
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-35 dB or less ±150 Hz/month 5
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Differential Gain5 Differential Phase
3% 5
Low Frequency Linearity
3° 6
Incidental Carrier Phase Modulation
10% 5
±2°
Signal to Noise Ratio
>60 dB (weighted)
K Factor
2% or less with 2T sin2pulse
20T Equivalent Gain and Delay
3% total baseline distortion
Spurious and Harmonic Radiation
-60 dB or better
In-Channel Intermodulation Distortion
-58 dB (-60 dB typical)
Analog Sound Performance Frequency Stability4
±150 Hz/month
Modulation Capability
±120 kHz peak deviation
Monaural Input
Adjustable 0 to +12 dBm, 600 ohms, balanced, >30 dB return loss
Pre-Emphasis
Selectable 75 µS or 50 µS
Frequency Response
±0.5 dB, 40 Hz to 15 kHz
Harmonic Distortion
0.5%, 30 Hz to 15 kHz
FM Noise
60 dB RMS with de-emphasis
AM Noise
50 dB RMS from 30 Hz to 15 kHz
Synchronous AM Noise
40 dB RMS at 400 Hz with ±25 kHz deviation
IRT Sound
Available on request
NICAM Sound
Available on request
DVB-T, DVB-T2, ISDB-TB, CMMB, FLO, CTTB Power Output (average)
13 W to 2.5 kW available; measured before optional mask filter
Systems
DVB-T, standard ETS 300744, ISDB-TB (Brazil standard)
ASI Inputs
4 BNC type, female; 75 ohms acc. to EN 50083-9 (2 main/2 hierarchical)
Output Power Reduction
0 to -6 dB
Crest Factor
Maximum 13 dB
Shoulder Level
<-37 dB (before mask filter)
END
≤0.7 dB
MER
>34 dB
Harmonics (before filter)
<-40 dB
Central Carrier Suppression
>75 dB
Frequency Stability (without external
±150 Hz/month
reference) Frequency Offsets
1 Hz resolution
ATSC Power Output (average)
13 W to 2.5 kW available; measured before optional mask filter
System
ATSC A/153, 8-VSB DTV standard
Data Input
19.39 Mb/s
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Impedance
75 ohms, unbalanced
Standard
SMPTE 310M
Connector
2 BNC female, isolated
External Precise Frequency Input
10 MHz, sinusoidal
Impedance
50 ohms, unbalanced
Level
0 to +10 dBm
Connector
BNC 50 ohms, female
Signal to Noise (EVM)
27 dB or better (4% or less)
Phase Noise
<104 dBc/Hz @ 20 kHz offset (ATSC A/64)
Pilot Frequency Stability
Less than ±150 Hz/month Less than ±3 Hz with internal or external PFC
Harmonic Radiation and Spurious
Meets mask requirements specified in FCC 5th and 6th report and order
Sideband Performance
Compliant with FCC radiation mask, when measured at the output of Harris-supplied output filter
Remote Control Parallel Remote
DB-37, female
Relay Contacts
25 mA @ 24 VDC
Digital Inputs (TTL level)
Pulse duration ≥100 ms or permanent signal
Ethernet/SNMP (optional)
RJ-45, twisted pair
Compliance
RoHS 2002/95/EC R&TTE 1999/5/EC Safety: EN 60215 EMC: EN 301-489-1 FCC Part 73
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Variation of peak output power with a change in average picture level from black to white (0% to
100%). 2
Peak-to-peak variation of peak sync voltage during one field using field test signal per EIA-508.
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Response specified for transmitter operating into a resistive load of 1.05:1 VSWR.
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After initial aging of 60 days.
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Measured using 20% peak-to-peak amplitude swept video modulation with pedestal set at 10%, 50%
and 90% APL. All percentages relative to a blanking to white transition. 6
Measured using a 5-step staircase signal. Test signal #3, CCIR REC. #421-3 Derate maximum
temperature by 3.6º F (2° C) per 1000 ft (305 m) above mean sea level.
Model Numbers/Power Levels Digital Models
Maxiva UAX
Power Before Filter Power After Filter
RF Output Connector
Total Rack Space
(xx = modulation)
(Watts)
(Watts)
UAX-10xx
13
10
“N” Female
4RU
UAX-50xx
63
50
“N” Female
4RU
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UAX-100xx
125
100
“N” Female
4RU
UAX-250xx
313
250
7-16 DIN
9RU
UAX-500xx
625
500
7-16 DIN
9RU
UAX-1000xx
1,250
1,000
7-16 DIN
14RU/ *21RU
UAX-2000xx
2,500
2,000
1-5/8” EIA
24RU/ *31RU
Analog Models
Power Before Filter Power After Filter
RF Output Connector
Total Rack Space
(Watts)
(Watts)
UAX-15AN
19
15
“N” Female
4RU
UAX-75AN
94
75
“N” Female
4RU
UAX-150AN
188
150
“N” Female
4RU
UAX-375AN
470
375
7-16 DIN
9RU
UAX-750AN
938
750
7-16 DIN
9RU
UAX-1500AN
1,875
1,500
7-16 DIN
14RU/ *21RU
UAX-3000AN
3,750
3,000
1-5/8” EIA
24RU/ *31RU
Digital Modulations AT: ATSC
(*with dual exciters)
DV: DVB-T/H T2: DVB-T2 IS: ISDB-Tb CM: CMMB CT: CTTB FL: FLOTV
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